@charset "utf-8";

html,
body,
ol,
ul,
li,
h1,
h2,
h3,
h4,
h5,
h6,
p,
th,
td,
dl,
dd,
form,
fieldset,
legend,
input,
textarea,
select {
    margin: 0;
    padding: 0;
}

body {
    font-size: 16px;
    font-family: '微软雅黑';
}

ul,
ol,
li {
    list-style: none;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-size: 16px;
    font-weight: normal;
}

b,
strong {
    font-weight: normal;
}

i,
em {
    font-style: normal;
}

a,
u {
    text-decoration: none;
}

img {
    border: 0;
    display: block;
}

input,
fieldset {
    outline: none;
    border: 0;
}

/* 
    因为页面中会有多处存在浮动 都需要给父元素解决高塌陷问题
    统一给clear_fix 这个类名的元素解决高度塌陷
    只要子元素有设置浮动 那么就可以给父元素设置一clear_fix 的类名
*/
.clear_fix:after {
    content: '.';
    clear: both;
    height: 0;
    overflow: hidden;
    display: block;
    visibility: hidden;
    border: 1px red solid;
}

.clear_fix {
    zoom: 1;
}